Good luck Carroll, your pictures look good! I hope you have good success with your sale. Jerry’s suggestions are really good, it’s important for the prospective buyer to be able to see the reed condition and know if all notes work.
People often use a “pincer” tool like this to get the pins out (but smaller than the one I show). You can put some tape over the sharp part to help not scratch the surface. If you are not familiar with this type of operation, maybe ask a friend for help.

I would also suggest a clearer picture of the logo. I think it says “Handcrafted,” but people will want to see it.
Also, it’s important to state that there are no musty, moldy or otherwise nasty smells in the accordion or case. Mainly, just be honest.
Anyway, just my two cents, your own judgement will be good.
Good luck!